How would YOU put it to good use?
Im thinking maybe a portable work light, or put all 4 together to make a nice little power pack for 12v devices…
ideas? they're old so i wouldn't want to use them for anything I can't monitor. 2 are a bit bulged but internal resistance is around 20-30mohms, charge to 4.2v and load test fine. I have not done capacity test yet tho – need a large block of time to monitor them in case of fire lol. you should see the bad ones – puffed up real bad, 0.3-0.5 OHMS internal resistance…they're cooked.
from an old ezee ebike.
by mickeyaaaa
5 Comments
You can throw them in a lake, it will recharge the electric eels
I’m not very knowledgeable about drivers and LED’s – can anyone recommend a decent and cheap powerful bulb and driver for this? I’d like to use just 1 cell, so 4.2v and hoping to find an all in one board with the led, driver and charge port so i can just charge it off any 5v usb charger.
Id run a 5v mini fan and sleep in a van down by the river.
Would this work well?: https://www.aliexpress.com/item/1005006417792055.html?
last option: XHP90 LED 30W/10A/3-3.4V 3500LM MAX, & 20MM 1/5 MODE DRIVER 3.7-4.3V, 8A,? seems for $10 and a bit of soldering i’d have a helluva bright portable light.
Bullet holders.